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Finding the Fourth Proportional to 3,759.57, 5,188.12 and 2,080.88

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Solution

The fourth proportional to 3,759.57, 5,188.12 and 2,080.88 is: 2,871.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,759.57 : 5,188.12 = 2,080.88 : x
  2. Step 2: Convert to fraction form
    3,759.57/5,188.12 = 2,080.88/x
  3. Step 3: Cross multiply
    3,759.57x = 5,188.12 × 2,080.88
  4. Step 4: Simplify right side
    3,759.57x = 10,795,829.21
  5. Step 5: Solve for x
    x = 10,795,829.21/3,759.57
  6. Step 6: Final answer
    x = 2,871.56

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.